Wrench



o. LEE

Sept. 30, l-930.

Filed Feb. y18. 1929 V sizes by use 'of merely one hand. therethrough; through which the shank sec- Parentedlsept. 3o, 1930] j. Y j 1,776,792

- UNITED si'lrcrss *PA'rlsN'lJYorric15:*1N

i i il i OLAF LEE, or MINNEAPoLrs, immune,ontA

i "wnnivegf' s A Apneanoa fue@ retramy 1s,` ieee. seria1No.`34o,72 y Itis the Object of this invention to provide is connected to ther rear bottom portions of a novel and improved wrenchV of the monkey the j aw and the jaw 5 tormsshoulders with Y.

wrench type, which the user can readily hold the shank portiona. A .lower movable jaw and adjust to fit nuts, bolts, etc. of various 9 is provided having a rectangular opening To this end, the invention consists in the tion 6a projects whereby the movable jaw novel parts land novel combinations of parts 9 can be slid upwardly or downwardly free-` hereinafter defined in the claim and described ly on the shank section 6a: `The movablefjaw in the following specification, made in con- 9 has va shank 1010iz bar shapesecured to the :lo nection with the accompanying drawings forward bottom side thereo'tand the shank l0 G0 wherein like reference characters refer to the tits within the channel formed 'by the handle same or similar parts throughout the various section 6b fot shank 6 `below`th`e" portions (if. views and in which: Ai'handle member l'lisws'ecured toor formed Fig. 1 is a Vview in side elevation of' the `integral with 1 the shankn l()` and this handle wrench illustrating the movableparts inone member 'is of the sainewidthV asthe handle 165 position in fulllines and in another position section 6b has "forward shouldersfwhich in dotted lines; ride against the rear edges :ot the two sides F 1g. -2 is a section taken on'the line 2-2 of 6C and 6d; The rearedgeoit the handle mehr Fig. l, as indicated by the arrows; ber llis curved to cbnveniently litfthe palm Y i Fig. 3 is a section taken on the line 3 3 of ot the hand of the user. Rack teeth 212 are 70 Fig. l, as indicated bythe arrows; and formed on the rear edge otthe side ,l61` of Fig. 4; is a section taken on the line 4-4 of shank 6'below the,portion 6F and these teeth Fig. l, as indicated by the arrows. project downwardly Itor `distance corre- Referring to the drawings, the wrench inspending to the length o'il movement ot'V the cludes an upper xed jaw 5 having a shank movable jaw 9 relative to the iixedfjaw 5.. 75

or handle 6 made in twosections 6a and 6b Anotch 11a is cut in thehandle inemberll` adfor convenience in assemblage. The section jacent, but not at the upper end thereof, and 6b, hereinafter called the handle section of a dog 13-is mounted onfa longitudinalpivot the shank, from its function, is of substanlll mounted inthe handlemember 1l and run' E@ tialiy U-shape in cross section and includes ning across the notch lla. `Tliefdog l3is es so the sides 6C and 6d andthe edge 6e. At its sentialjly' in the s'hapeof a right 'angular lelower end, the handle section 6* has a curved. ver, the swinging end of `which carries a point 7 formed thereon, closing the lower end number of'fVfshaped"'teeth 13a or 'greater of the channel formed by the section 6b and width at theirfrear ends, as shown in V4full providing aconvenient point for the pulling lines, Fig. 1 than at their itorward ends.` The 85 of cotter pins, staples, etc. t the 'upper end d c5313 has two .i'atsurtaces i3. at its inner two of the handle portion 6b, the sides 6e and 6d sides' and atat bar spring l5 secured as by a Y project Arearwardly a considerable distance small screw l`6'wto the handle memberll'il' at farther than the remainder 'of the sides 6e the bottom of the notch 11j, is adapted lto and 6d to form portions Gf between the lower bear against either one or the other." of the 59` end of the upper shank section 6a is adapted two ilat surfacesl3b to hold the dog 13j`in to be received. The portions 6E terminate in either the retracted position shown in full a diagonalline and the shank portion 6a is lines .Fig. 3, or in the engaging position reduced inwidth adjacent its lower end to shown in dotted'lines Fig, 3. It will be seen 'form diagonal shoulders Vtg which abut the th atwhen the dog 13 pressed forwardly as 95 diagonal portions of the upper ends of the by the thumb ofthe operator, from the rep'ortions 6?. Countersunk' machine screws 8 tracted position, Fig. `3,lto the engaging poj are used for connecting the portions Gf to the sition-s'hown in `dotted linesv Fig. 3 the teeth reduced portions ofthe upper part 6a of the. l3a.will be carried. into engagement with the `59 shank. The. upper section 6a of the shank rack teeth l2 on the handle section 6l of the 10U shank 6 and as these teeth 13EL at their forward or first engaging ends are of considerably narrower width than at their rear ends the teeth will find their way into proper engagement with the teeth 12. The shank 1() is cut away at its lower forward side at 1()a to form with the two sides 6 and 6d a socket k(il) for the upper end of a light coiled pressure spring 17. The lower end of the spring 17 lits within a small socket formed in the pointed member 7 at the lower end of the shank handle 6b. The spring 17 will accordingly normally act to move the shank 10 upwardly in the channel formed in the handle shank 6bto slide the movable jaw 9 into engagement with the fixed jaw 5. Y

In use, the wrench will -be grasped with one hand of the operator, the thumb A of the operator taking the position illustrated in dotted lines Fig. 1 and the lingers and palm of the operator grasping the handle shank 6b and the handle member 11. When it becomes desirable to adjust the wrench to a'nut of a certain size the thumb will be moved downwardly relatively to the fingers until the movable jaw 9 is properly spaced relative to the fixed' aw 5 to receive the nut. This movement will be against the tension of the spring 17. lThe dog 13 may then be easily thrown into engagingposition so that the teeth 13a engage certain of the rack teeth 12, whereupon the wrench is in'proper position to receive the nut. As the nut is being turned, the thumb A of the operator may hold the dog in theengaging position, although if desired the spring 15may be4 made heavy enough to hold the dog in engagement with the rack teeth 12 so that the thumb need not beapplied continuously to rthe dog.

If the movable jaw 9 be spaced from the xed jaw 5 a greater distance than the nut to which the wrenchl is to be fitted, and the nut be pressed between the movable j aw and the fixed jaw 5, the spacing of the two jaws 9 and 5 relatively to eachother can be prop-V erly gauged by merely vreleasing the handle member 11 whereupon the spring 17 will act to force the shank 10 and the movable jaw 9 carried thereby toward the fixed jaw 5 until the nut is closelyheld by the two jaws 5 and 9. The dogf 13 can then be thrown into engagement with the rack teeth 12, whereupon the wrench applied to the nut will beready for use.

Y It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of the present invention.

. What is claimed is: Y

A wrench comprising a fixed aw, a shank secured to said ixed jaw and having a hollen' and open sided oil'setY portion thereoma movable jaw mounted on said shankffor sliding movement thereon, a shank secured to said movable jaw and extending through said shank of the fixed jaw and fitting within the hollowed offset portion thereof for sliding movement therein, a handle portion secured to the shank of said movable jaw and mounted for sliding movement along the 4open .side of said oset portion, rack teeth cut on the edge of the open side of said offset portion adjacent said handle member and a dog "pivoted to said handle member and adapted to be thrown into engagement with said teeth to hold said movable jawin a desired spaced relation from said fixed jaw.

In testimony whereof I affix my signature.

OLAF LEE. 

